Sometimes you can do Shakespeare and you're still not an actor.

When Marvel put together Ultimate Spider-Man and someone came up with the idea of having Principal Coulson, they said, "Do you want to do the voice?" I thought, "I have to do the voice!" Because I have a daughter and we watch some cartoons, I couldn't bear the idea of tuning in and hearing somebody else's voice.

As a fanboy myself, one of the fun things about the gig has been every time I get a new script, I get to find out more about his day - to-day life and what goes on and what his relationships are.

I was a football player at college and dislocated my thumb. I was out for a bit and passed the theatre and saw some lovely drama students walking into an audition for 'Much Ado About Nothing' and thought: 'That's what I'll do when I recover.' I joined that production and was hooked.

As you can imagine when you have to summon a force like that together, the opposing elements are pretty freaking gnarly. I would think of those pioneer movies where they've got the cook and the ladies loading the guns and firing at the surrounded wagons. I don't put Coulson in that category, I think he is on the upper tier of people who come to scrap at situations like that but everybody's involved.

I was an 'Ironman' fan. It was in the '70s. I definitely liked comics and drew a lot of panels on my notebook when I should have been studying - probably why I ended up in the arts.

There was a day on the set of Iron Man where I said, "I remember some of this stuff. I definitely had some Iron Man books. But, S.H.I.E.L.D. is a little bit of a weak spot for me."